Lifter for sashes of greenhouses and the like.



D. ILIPFE. LIFTER r011 SASHES 0P GRE-ENHOUSBS AND THE LIKE.

APPLIOATIONTILEDMAB. 20. 1908. v

Patented Jan.24, 1911.

v I transom, or other s1m1lar ob ect.

UNITED STATES m'rnn'r OFFICE.

DANIEL ILIFFE, 0F SOMERVILLE, MASSACHUSETTS.

LIFTER FOR SASHES OF GREENHOUSES AND THE LIKE.

To all whom it may concern:

Be it known that I, DANIEL Imrrn, a citizen of the United States, and a resident of Somerville, in the county of Middlesex and State of Massachusetts, have invented an Improvement in Lifters for Sashes of Greenhouses and the Like, of which the following description, in connection with, the accompanying drawing, is a specification, like letters on the drawing representing like parts.

This invention relates to a device for operating a sash, and by that it is intended to mean that the device is for the purpose of opening and closing entirely or partially a hinged or otherwise movable sash, skylight,

It is the object of this device to provide a mechanism which will act positively to secure the desired movement of the shaft, which will hold the same locked in the position to which it is set, which will be strong and durable, and which may be operated from any desired point, irrespective of the position of the mechanism connected directly with the sash, and which will take up the minimum amount of space, especially in so far as the parts for transmitting the power are concerned.

The invention is particularly designed for use in connection with the raising and lowering of skylights in greenhouses, but it is obvious that it is equally useful for many other purposes.

The nature of the invention will more fully appear from the accompanying description and drawings and it will be particularly pointed out in the claims.

The drawings illustrate the preferred form of the device as adapted for use in a greenhouse.

In the drawings, Figure 1 represents an illustrative view in cross section of a portion of a greenhouse showing the device in position and connected to a skylight which has been raised and is held raised thereby. Fig. 2 is a top plan View of the supporting bracket and connected parts of the device. Fig. 3 is a sideelevation of the parts shown in Fig. 2. Fig. 4 is a front elevation of a portion of a sash-operating shaft and the upper portion of the device of this invention by which it is operated.

The outline of the portion of the walls and roof of a greenhouse or other similar structure is represented at A, and a skylight or sash B is shown pivoted to the roof at B but this arrangement is simply for the pur- Specification of Letters Patent.

Application filed March 20, 1908.

Patented Jan. 24, 1911.

Serial No. 422,249.

poses of illustrating one adaptation of the device of the invention.

A suitable shaft C is supported in any suitable manner adjacent the sash or sashes to be operated, and is provided at suitable intervals with suitable connections to the sash or sashes by which, upon the rotation of the shaft in opposite directions the sash or sashes will be correspondingly raised or lowered. Such connections are indicated as a crank arm C on the shaft and a link C extending from the crank arm to the sash.

Thepulley D is mounted on and made fast to the shaft C at any suitable point. Herein the pulley D is shown as mounted between a forked arm D of a support for the shaft C mounted on the end of the upright D A supporting bracket E is firmly mounted at any desired point where it will be convenient to locate the means for operating the device. The bracket E is shown as provided with an aperture E adapted to fit over a post and be held in place by a setscrew E, but any suitable means may be employed for holding the bracket in position. The bracket E has journaled therein a rotatable drum F, preferably spirally grooved on its periphery, as shown. Means are also located 011 the bracket by which the drum may be rotated in either direction, and also looked when desired against rotation. A simple and efficient means for securing this end is shown and comprises a worm wheel G, mounted on the end of the shaft of the drum F, and a worm Gr engaging the worm wheel G and mounted transversely thereof in arms Gr forming a portion of the bracket E. The shaft of the worm is provided with a suitable operating hand-wheel G*. A cord H is wound about the drum F in the spiral groove for several turns, and then the ends of the cord pass up and around the pulley D, in opposite directions, and are fastened to the pulley as indicated in Fig. 4.

By the term cord it is intended to include any flexible device, such as rope, wire rope, wire, chain, or other suitable connection, but wire rope is preferred because of its strength, flexibility, wearing qualities and comparatively small size.

Idler pulleys are arranged at suitable points to change the direction of the cord, and in the drawing two sets are shown, one set at K and another at L in Fig. 1, but any slack existing in the cord and insure a direct and positive operation of the pulley B.

It will thus be seen upon turning the hand-wheel G the rotation of the drum F will be transmitted directly to the pulley D,

and thence to the shaft C, and the latter will be turned in one or the other direction toopen and close the sash. \Vhen the handwheel is not being moved the worm G interlocking with the worm wheel G prevents any rotation of the drum F. The flexibility of the cord by which the power is transmitted from the drum to the pulley enables the bracket 15, with the operating handwheel G, to be placed in any desired position in the building.

Having described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. A sash operating device comprising a pulley and its intermediate connections for raising the lowering the sash upon rotation thereof is one or the other direction, a bracket, a drum journaled in said bracket, a cord wound about said drum and having its ends passed in opposite directions around and fastened to said pulley, means for rotating the drum in either direction and for locking it against rotation.

2. A sash operating device comprising a pulley and its intermediate connections for raising and lowering the sash upon rotation thereof in one or the other direction, a bracket, a drum journaled in said bracket, a cord wound about said drum and having its ends passed in opposite directions around and fastened to said pulley, means for rotating the drum in either direction and for locking it against rotation, and idler pulleys arranged in pairs to guide and change the direction of said cord whereby the said support may be located at any desired point irrespective of the location of the said shaft.

3. A sash operating device comprising a pulley and its intermediate connections for raising and lowering the sash upon rotation thereof in one or the other direction, a bracket, a drum spirally grooved on its periphery and journaled in said bracket, .a shaft mounted in said bracket parallel with said drum, a pair of idler pulleys mounted on said shaft to rotate and slide freely thereon, a cord wound about said drum in said spiral groove passing under said idler pulv leys and having its ends passed in opposite directions around and fastened to said pulley, and means for rotating the drum in either direction and for locking it against rotation.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

' DANIEL ILIFFE.

Witnesses:

MABEL PARTnLow, THOMAS J. DRUMMOND.

V\ CD in It is hereby certified that in Letters Patent No. 982,500, granted January 2%,

19.11, upon the application of Daniel Ilifie, of Somerville, Massachusetts, for an improvement in Litters for Sashes of Greenhouses and the Like, errors appear requiring correction as follows: Page 2, line 3%, the article the, first occurrence, should read and, and same page, line 35, the word is should read in; and that the said Letters Patent should he read with these corrections therein that the same may conformto the record of the ease in the Patent Ofiice,

Signed and sealed this 21st day of February, A. D., 1911.

[emu] E. B. MOORE,

Commissioner of Patents.

Corrections in Letters Patent No. 982 

